To most male bikers, chics cant ride and if they could they certainly couldn't ride fast or rapid enough to race. Therefore, to call a woman rapid would be a dent in manhood's pride. So a rapid woman would become a Wapid Woman. What males don't realise, it's also a woman going at warp speed... WArp and raPID =WAPID

From a male perspective:
Look at the boobs on her, watch her go, she's wapid.
From a female:
She quicker than fast, she's wapid.